taken 8 months ago, near to Glasslie, Fife, Great Britain

These two arrows (made with chalk powder) have been used as route markers for either a mountain bike competition or a foot race. I have also seen red and white tape tied to trees used as markers in a similar manner and left in place after the event. I understand the need to mark such a route for those unfamiliar with the area but surely the organisers could ensure that such markers are removed when the event is over. At the very least this is inconsiderate behaviour which spoils the 'feel' of a wilderness area.
See Lomond Hills Regional Park article Link